The identifier that starts with (query) Maximum length is 128 - sql

Question

Problem: I am using a sp on sql server where I took parameter which modify the query and then run the full query in the server. While I am passing that parameter to sp then it says: "The identifier that starts with 'WHERE d.LastModified<1676270281779 AND (p.ProductName LIKE '%2004%' OR p.ProductBarcode LIKE '%2004%') AND d.SupplierId='SUP-001' is too long. Maximum length is 128."
THE QUERY:
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER PROCEDURE [dbo].[get_SupComProducts] #whereClause NVARCHAR(max)
AS
BEGIN
DECLARE #query NVARCHAR(max)
, #status VARCHAR(25);
SET #status = 'IN'
SET #query = 'SELECT DISTINCT
p.ProductId,
p.CompanyId,
p.ProductName,
p.ProductGrossWeight,
p.ProductNetWeight,
p.ProductUnit,
p.CategoryId,
p.BrandId,
p.ProductBarcode,
p.MinShelfLife,
p.ProductMargin,
p.IsWeighted,
p.PVAT,
p.ProductMargin,
p.AFSProduct,
ISNULL(sp.ProductBarcode, 0) AS Barcode,
ISNULL(sp.CostPrice, 0) AS CostPrice,
ISNULL(sp.TradePrice, 0) AS TradePrice,
ISNULL(sp.MRP, 0) AS MRP,
ISNULL(sp.SellingPrice, 0) AS SellingPrice,
ISNULL(sp.VAT, 0) AS VAT,
ISNULL((
SELECT SUM(ProductQty) AS ProductQty
FROM StockDetails
WHERE ProductId = p.ProductId AND [Status]= ''' + #status + '''' +
'),0) AS CurrentStock
FROM Supplier d
JOIN Product p
ON p.CompanyId = d.CompanyId
LEFT JOIN StockDetails sd
ON sd.ProductId = p.ProductId
LEFT JOIN SupplierProduct sp
ON sp.ProductId = p.ProductId ' + #whereClause
EXEC (#query)
END
GO
Please if there are any resolve you guys know already, it will be much appreciable. Thanks in advance.
SP EXEC:
EXEC [dbo].[get_SupComProducts] #whereClause="WHERE d.LastModified<1676270281779 AND (p.ProductName LIKE '%2004%' OR p.ProductBarcode LIKE '%2004%') AND d.SupplierId='SUP-00123'"
If I remove any of the AND query then it works, but the full query says the error.
Msg 103, Level 15, State 4, Line 1
The identifier that starts with 'WHERE d.LastModified<1676270281779 AND (p.ProductName LIKE '%2004%' OR p.ProductBarcode LIKE '%2004%') AND d.SupplierId='SUP-001' is too long. Maximum length is 128.

Answer 1

While there might be issues with your procedure, this particular one comes from the way you call it. Double quotes in SQL, by default, designate object names, and in MS SQL Server, maximum length for any object name is 128 characters. That's where you are getting this error, I suspect.
So, in your sp call, you need to replace your double quotes with single ones, and appropriately escape all single quotes inside it. Something like this:
EXEC [dbo].[get_SupComProducts] #whereClause = '
WHERE
d.LastModified<1676270281779 AND (
p.ProductName LIKE ''%2004%''
OR p.ProductBarcode LIKE ''%2004%''
) AND d.SupplierId=''SUP-00123''
';