Indexing inside foreach is repeating the same value

The main issue is with the wherecontains() function usage. This function returns indices, not the actual matching items, and the way it's being used is causing incorrect lookups.

Made update to wherecontains in line number 117

a!localVariables(
  local!wmsPlans: index(
    rule!WMS_qr_Plan(
      columns: {
        'recordType!{a64248d4-beb2-46af-9f5f-eb0f79b17649}.fields.{f39ad615-5340-4968-8dd2-3b4d81474095}',
        'recordType!{a64248d4-beb2-46af-9f5f-eb0f79b17649}.fields.{a8baeebc-1ffb-4f0a-9096-d148777d3756}'
      },
      clientId: 11,
      planStatus: "Active"
    ).data,
    {}
  ),
  local!vetRequestPlans: index(
    rule!VET_qr_RequestPlans_ByFilters(requestId: 1188 ),
    {}
  ),
  local!additionalCITplans,
  local!plansSelected,
  local!editablePlans: if(
    length(a!flatten(local!plansSelected)) > 0,
    reject(
      fn!isnull,
      {
        a!forEach(
          items: local!vetRequestPlans,
          expression: if(
            contains(
              local!plansSelected,
              fv!item['recordType!{9339afa7-3440-42ac-9d18-6e89a7c891b4}.fields.{0a9f63be-0169-4a60-b003-5fbc6b8ab22b}']
            ),
            fv!item,
            null()
          )
        ),
        local!additionalCITplans
      }
    ),
    {}
  ),

  local!newPlans: {},
  local!finalPlans,
  local!confirmationMessage: null,

  a!sectionLayout(
    label: "Rider A Plan",
    contents: {
      /* Dropdown to select plans from WMS */
      a!multipleDropdownField(
        choiceLabels: a!forEach(
          local!wmsPlans,
          fv!item['recordType!{a64248d4-beb2-46af-9f5f-eb0f79b17649}.fields.{f39ad615-5340-4968-8dd2-3b4d81474095}']
        ),
        choiceValues: a!forEach(
          local!wmsPlans,
          fv!item['recordType!{a64248d4-beb2-46af-9f5f-eb0f79b17649}.fields.{a8baeebc-1ffb-4f0a-9096-d148777d3756}']
        ),
        label: "Select Plan(s)",
        instructions: "Choose one or more plans to include",
        value: local!plansSelected,
        saveInto: {
          local!plansSelected,
          a!forEach(
            items: local!vetRequestPlans,
            expression: {
              if(
                contains(
                  local!plansSelected,
                  fv!item['recordType!{9339afa7-3440-42ac-9d18-6e89a7c891b4}.fields.{0a9f63be-0169-4a60-b003-5fbc6b8ab22b}']
                ),
                a!save(
                  target: fv!item['recordType!{9339afa7-3440-42ac-9d18-6e89a7c891b4}.fields.{1757e6bb-8aa8-40c1-a6e4-e19bf1d6997c}'],
                  value: "Y"
                ),
                a!save(
                  target: fv!item['recordType!{9339afa7-3440-42ac-9d18-6e89a7c891b4}.fields.{1757e6bb-8aa8-40c1-a6e4-e19bf1d6997c}'],
                  value: null()
                )
              )
            }
          ),
          /*Populate additional plans selected at task level*/
          a!save(
            target: local!additionalCITplans,
            value: rule!VET_formatPlans(
              newPlans: local!plansSelected,
              requestId: ri!vetRequestMaster['recordType!{bcf01859-d047-4a18-9bcd-d22f5777cfc4}.fields.{01ed6269-0ba1-4f80-b8b3-b4480cc94eed}'],
              oldPlans: local!vetRequestPlans,
              clientId: ri!vetRequestMaster['recordType!{bcf01859-d047-4a18-9bcd-d22f5777cfc4}.fields.{c5f29ec0-9886-4ee7-9228-98a6a42acf28}']
            )
          )
        }
      ),
      /* Editable Grid for Selected Plans */
      if(
        length(a!flatten(local!plansSelected)) > 0,
        a!gridLayout(
          label: "Edit Selected Plan Names",
          headerCells: {
            a!gridLayoutHeaderCell(label: "Plan Name"),
          },
          columnConfigs: {
            a!gridLayoutColumnConfig(width: "DISTRIBUTE", weight: 8),
          },
          rows: a!forEach(
            items: local!editablePlans,
            expression: a!gridRowLayout(
              id: fv!index,
              contents: {
                a!textField(
                  label: "Plan Name " & fv!index,
                  value: if(
                    a!isNullOrEmpty(
                      fv!item['recordType!{9339afa7-3440-42ac-9d18-6e89a7c891b4}.fields.{a1d9bcaf-fedd-4524-91a7-1f43dd80dc4f}']
                    ),
                    /* FIXED: Get the plan name from wmsPlans based on the current item's planId */
                    property(
                      index(
                        local!wmsPlans,
                        wherecontains(
                          fv!item['recordType!{9339afa7-3440-42ac-9d18-6e89a7c891b4}.fields.{0a9f63be-0169-4a60-b003-5fbc6b8ab22b}'],
                          tointeger(
                            index(
                              local!wmsPlans,
                              'recordType!{a64248d4-beb2-46af-9f5f-eb0f79b17649}.fields.{a8baeebc-1ffb-4f0a-9096-d148777d3756}',
                              {}
                            )
                          )
                        ),
                        {}
                      ),
                      'recordType!{a64248d4-beb2-46af-9f5f-eb0f79b17649}.fields.{f39ad615-5340-4968-8dd2-3b4d81474095}',
                      ""
                    ),
                    
                    
                    fv!item['recordType!{9339afa7-3440-42ac-9d18-6e89a7c891b4}.fields.{a1d9bcaf-fedd-4524-91a7-1f43dd80dc4f}']
                  ),
                  saveInto: fv!item['recordType!{9339afa7-3440-42ac-9d18-6e89a7c891b4}.fields.{a1d9bcaf-fedd-4524-91a7-1f43dd80dc4f}'],
                  required: true
                )
              }
            )
          ),
          rowHeader: 1
        ),
        {}
      ),
    }
  )
)

Thanks,   Shubham Aware   its populating correctly But the plan name is not storing into the local!editable plan after selecting from the dropdown.  if I made any changes only its saving I tried using save!value. But its not working.

Based on your issue i have updated the code.
Let me know if that works

a!localVariables(
  local!wmsPlans: index(
    rule!WMS_qr_Plan(
      columns: {
        'recordType!{a64248d4-beb2-46af-9f5f-eb0f79b17649}.fields.{f39ad615-5340-4968-8dd2-3b4d81474095}',
        'recordType!{a64248d4-beb2-46af-9f5f-eb0f79b17649}.fields.{a8baeebc-1ffb-4f0a-9096-d148777d3756}'
      },
      clientId: 11,
      planStatus: "Active"
    ).data,
    {}
  ),
  local!vetRequestPlans: index(
    rule!VET_qr_RequestPlans_ByFilters(requestId: 1188 ),
    {}
  ),
  local!additionalCITplans,
  local!plansSelected,
  local!editablePlans: if(
    length(a!flatten(local!plansSelected)) > 0,
    reject(
      fn!isnull,
      {
        a!forEach(
          items: local!vetRequestPlans,
          expression: if(
            contains(
              local!plansSelected,
              fv!item['recordType!{9339afa7-3440-42ac-9d18-6e89a7c891b4}.fields.{0a9f63be-0169-4a60-b003-5fbc6b8ab22b}']
            ),
            fv!item,
            null()
          )
        ),
        local!additionalCITplans
      }
    ),
    {}
  ),

  local!newPlans: {},
  local!finalPlans,
  local!confirmationMessage: null,

  a!sectionLayout(
    label: "Rider A Plan",
    contents: {
      /* Dropdown to select plans from WMS */
      a!multipleDropdownField(
        choiceLabels: a!forEach(
          local!wmsPlans,
          fv!item['recordType!{a64248d4-beb2-46af-9f5f-eb0f79b17649}.fields.{f39ad615-5340-4968-8dd2-3b4d81474095}']
        ),
        choiceValues: a!forEach(
          local!wmsPlans,
          fv!item['recordType!{a64248d4-beb2-46af-9f5f-eb0f79b17649}.fields.{a8baeebc-1ffb-4f0a-9096-d148777d3756}']
        ),
        label: "Select Plan(s)",
        instructions: "Choose one or more plans to include",
        value: local!plansSelected,
        saveInto: {
          local!plansSelected,
          a!forEach(
            items: local!vetRequestPlans,
            expression: {
              if(
                contains(
                  local!plansSelected,
                  fv!item['recordType!{9339afa7-3440-42ac-9d18-6e89a7c891b4}.fields.{0a9f63be-0169-4a60-b003-5fbc6b8ab22b}']
                ),
                a!save(
                  target: fv!item['recordType!{9339afa7-3440-42ac-9d18-6e89a7c891b4}.fields.{1757e6bb-8aa8-40c1-a6e4-e19bf1d6997c}'],
                  value: "Y"
                ),
                a!save(
                  target: fv!item['recordType!{9339afa7-3440-42ac-9d18-6e89a7c891b4}.fields.{1757e6bb-8aa8-40c1-a6e4-e19bf1d6997c}'],
                  value: null()
                )
              )
            }
          ),
          /*Populate additional plans selected at task level*/
          a!save(
            target: local!additionalCITplans,
            value: rule!VET_formatPlans(
              newPlans: local!plansSelected,
              requestId: ri!vetRequestMaster['recordType!{bcf01859-d047-4a18-9bcd-d22f5777cfc4}.fields.{01ed6269-0ba1-4f80-b8b3-b4480cc94eed}'],
              oldPlans: local!vetRequestPlans,
              clientId: ri!vetRequestMaster['recordType!{bcf01859-d047-4a18-9bcd-d22f5777cfc4}.fields.{c5f29ec0-9886-4ee7-9228-98a6a42acf28}']
            )
          ),
          /* ADDED: Auto-populate plan names in editablePlans */
          a!save(
            target: local!editablePlans,
            value: a!forEach(
              items: local!editablePlans,
              expression: if(
                contains(
                  local!plansSelected,
                  fv!item['recordType!{9339afa7-3440-42ac-9d18-6e89a7c891b4}.fields.{0a9f63be-0169-4a60-b003-5fbc6b8ab22b}']
                ),
                a!update(
                  fv!item,
                  'recordType!{9339afa7-3440-42ac-9d18-6e89a7c891b4}.fields.{a1d9bcaf-fedd-4524-91a7-1f43dd80dc4f}',
                  property(
                    index(
                      local!wmsPlans,
                      wherecontains(
                        fv!item['recordType!{9339afa7-3440-42ac-9d18-6e89a7c891b4}.fields.{0a9f63be-0169-4a60-b003-5fbc6b8ab22b}'],
                        property(local!wmsPlans, 'recordType!{a64248d4-beb2-46af-9f5f-eb0f79b17649}.fields.{a8baeebc-1ffb-4f0a-9096-d148777d3756}', {})
                      )[1],
                      {}
                    ),
                    'recordType!{a64248d4-beb2-46af-9f5f-eb0f79b17649}.fields.{f39ad615-5340-4968-8dd2-3b4d81474095}',
                    ""
                  )
                ),
                fv!item
              )
            )
          )
        }
      ),
      /* Editable Grid for Selected Plans */
      if(
        length(a!flatten(local!plansSelected)) > 0,
        a!gridLayout(
          label: "Edit Selected Plan Names",
          headerCells: {
            a!gridLayoutHeaderCell(label: "Plan Name"),
          },
          columnConfigs: {
            a!gridLayoutColumnConfig(width: "DISTRIBUTE", weight: 8),
          },
          rows: a!forEach(
            items: local!editablePlans,
            expression: a!gridRowLayout(
              id: fv!index,
              contents: {
                a!textField(
                  label: "Plan Name " & fv!index,
                  value: if(
                    a!isNullOrEmpty(
                      fv!item['recordType!{9339afa7-3440-42ac-9d18-6e89a7c891b4}.fields.{a1d9bcaf-fedd-4524-91a7-1f43dd80dc4f}']
                    ),
                    property(
                      index(
                        local!wmsPlans,
                        wherecontains(
                          fv!item['recordType!{9339afa7-3440-42ac-9d18-6e89a7c891b4}.fields.{0a9f63be-0169-4a60-b003-5fbc6b8ab22b}'],
                          tointeger(
                            index(
                              local!wmsPlans,
                              'recordType!{a64248d4-beb2-46af-9f5f-eb0f79b17649}.fields.{a8baeebc-1ffb-4f0a-9096-d148777d3756}',
                              {}
                            )
                          )
                        ),
                        {}
                      ),
                      'recordType!{a64248d4-beb2-46af-9f5f-eb0f79b17649}.fields.{f39ad615-5340-4968-8dd2-3b4d81474095}',
                      ""
                    ),
                    fv!item['recordType!{9339afa7-3440-42ac-9d18-6e89a7c891b4}.fields.{a1d9bcaf-fedd-4524-91a7-1f43dd80dc4f}']
                  ),
                  saveInto: fv!item['recordType!{9339afa7-3440-42ac-9d18-6e89a7c891b4}.fields.{a1d9bcaf-fedd-4524-91a7-1f43dd80dc4f}'],
                  required: true
                )
              }
            )
          ),
          rowHeader: 1
        ),
        {}
      ),
    }
  )
)

Shubham Aware  I added the code you provided its still now saving .

Can you share screenshot of your local variable and rule input console?

Shubham Aware Will this help?

this is ri value

Shubham Aware Will this help?

this is ri value